Friction-clutch.



PATENTED MAY 19, 1908.

P. LUCAS. FRICTION CLUTCH.

APPLICATION FILED OUT. 19, 1907 2 SHEETS-SHEET 1.

awwMo'c 7 a]. QMQMM Pnh PATENTED MAY 19,1908.

F. LUCAS.

FRICTION CLUTCH.

APP IIIIIIIIIIIIII 0T. 111111 7.

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awvqwbo UNITED STATES PATENT OFFICE.

FRANK LUCAS, or. SIDNEY, o'nIo;

FRICTION-CLUTCH.

, tion in Friction-Clutches; and I declare the following to be a full, clear, and exact de-- scription of the same, such as will enable others skilled in the art to which it appercarried-by a rotatab tains to make and use the invention, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a side view of the invention with the members of the clutch disenga ed. Fig. 2is a similar view with the mem ers engaged. Fig. 3 is a section on the line 3-3, Fig. 2. Fig. 4 is a section on the line 4-4, Fig. 3. Fig. 5is a detail view of the cylinder casting. Fig. 6 is a detail fragmentary view of one of the levers. Fig. 7 is a detail view of the link. v The invention relates to friction clutches and it consists in the novel construction and combinations of parts as hereinafter set tudinal central projection g, which engagesthe pulley b, in a fast manner.

A cylindrical casting h, fits upon the shaft a, in a slidable manner, having a spline engagement therewith as shown at hf, this casting having an end portion '21, of the form of the section of a cone and designed to have engagement with the recess (Z, of the loose clutch member. The fast. clutch member proper, j, is mounted in a slidable manner upon. the casting h, having spline engagement therewith as shown at. j, and is provided with wedge or miter-form projections 1' and recesses 1' of similar form designed for engagement with the recesses and projections of the loose member 0. The part 3', has an extension 70, provided with an annular groove Zc, and the casting h, has diametrically opposite journal pro'ections h e annulus engaging Specification of Letters Patent.

Applifiation filed October 19, 1907. Serial No. 398,214.

Patented May 19, 1908'.

a groove k of such casting. Z, is a lever device having a forked upper end ortion Z, having fulcrum engagement at tie free ends of the forks with a pivotal link m, of a stationary bracket device 'm, such forks embracing the casting h, and having pivotal engagement intermediately thereof with the journal projections h n, is a second lever device having fulcrum connection at n, with the lever Z, and provided with a forked upper end portion 0, embracing the extension 7c, of the part y', such forked portion having diametrically opposite pins p, engaging the annular groove Zc, of the extension.

Thus upon movement of the handle portion of the lever Z, to the right, the casting or carrier h, is moved to the right to cause enga ement of the conical surfaces of casting h, an loose member 0, and consequent gradually increasing rotation of the casting h, until it reaches the speed of the power or line shaft. The lever Z, having been first operated as above stated to start the rotation of the casting'h, the handle portion of the lever n, is next moved to the left (an interval g between such levers allowing this opposite movement thereof) which causes the member j, to move to the right upon the-shaft and effects the engagement of the jaws of the members j, and c. The casting h, is thus gradually started in rotation as are also the clutch members, without shock or jar; The handle portions of the two levers Z, and a, maybe moved oppositely at practically the same time to effect the clutch, as the casting h, is started in rotation at once and the clutch of the members closely follows.

Having described the invention, what I claim and desire to secure by Letters Patent 1s:

1. In a friction clutch, a rotar shaft, a loose clutch member, a fast clutc member slidable u on said shaft and composed of a frictional Hriving section and a positive driving section, said frictional driving section being capable .of engagement with the loose clutch member to start the same in rotation, said ositive driving section and loose clutch mem er having opposing jaws capable of meshing together to form a positive drivin connection, a lever device for moving said frictional drivin section and a second lever device having fu crum engagement with the first lever device for moving said positive driving section.

2. In a friction clutch,- a rotary shaft, a pulley loosely mounted thereon, and carrymg fast thereto a loose clutch member 'providedwith a central conical recess, a cylindrical castin fast upon said shaft and hav- 1 .clutch member and loose clutch member having op osing jaws capable of meshing together, a ever device for moving said casting upon the shaft, and a second lever device havingfulcrurn. engagement with the first lever device for moving the fast clutch member u on the casting.

3. n a friction clutch, a rotary shaft, a ulley loosely mounted thereon, and carrymg fast thereto a loose clutch member provided with a central conical recess, a c lindrical casting fast upon said shaft and aving a slidable engagement therewith, said casting having an end portion of conical form capable of engagement with said central recess, a fast clutch member having slidable engagement with said casting, said fast clutch member and loose clutch member having opposing aws ca )able of meshing to gether, a lever device raving a forked upper slidablc pivotal connection with the fast clutch member.

In testimony whereof I alIiX my signature,

in presence of two witnesses.

FRANK LUCAS.

Witnesses:

D. OLDHAM, JOHN OLDHAM. 

